2 * Abilis Systems Single DVB-T Receiver
3 * Copyright (C) 2008 Pierrick Hascoet <pierrick.hascoet@abilis.com>
4 * Copyright (C) 2010 Devin Heitmueller <dheitmueller@kernellabs.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2, or (at your option)
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include <linux/kernel.h>
21 #include <linux/errno.h>
22 #include <linux/init.h>
23 #include <linux/slab.h>
24 #include <linux/module.h>
26 #include <linux/kref.h>
27 #include <linux/uaccess.h>
28 #include <linux/usb.h>
30 /* header file for Usb device driver*/
31 #include "as102_drv.h"
36 module_param_named(debug, as102_debug, int, 0644);
37 MODULE_PARM_DESC(debug, "Turn on/off debugging (default: off)");
40 module_param_named(dual_tuner, dual_tuner, int, 0644);
41 MODULE_PARM_DESC(dual_tuner, "Activate Dual-Tuner config (default: off)");
43 static int fw_upload = 1;
44 module_param_named(fw_upload, fw_upload, int, 0644);
45 MODULE_PARM_DESC(fw_upload, "Turn on/off default FW upload (default: on)");
47 static int pid_filtering;
48 module_param_named(pid_filtering, pid_filtering, int, 0644);
49 MODULE_PARM_DESC(pid_filtering, "Activate HW PID filtering (default: off)");
51 static int ts_auto_disable;
52 module_param_named(ts_auto_disable, ts_auto_disable, int, 0644);
53 MODULE_PARM_DESC(ts_auto_disable, "Stream Auto Enable on FW (default: off)");
56 module_param_named(elna_enable, elna_enable, int, 0644);
57 MODULE_PARM_DESC(elna_enable, "Activate eLNA (default: on)");
59 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
61 static void as102_stop_stream(struct as102_dev_t *dev)
63 struct as10x_bus_adapter_t *bus_adap;
66 bus_adap = &dev->bus_adap;
70 if (bus_adap->ops->stop_stream != NULL)
71 bus_adap->ops->stop_stream(dev);
73 if (ts_auto_disable) {
74 if (mutex_lock_interruptible(&dev->bus_adap.lock))
77 if (as10x_cmd_stop_streaming(bus_adap) < 0)
78 dprintk(debug, "as10x_cmd_stop_streaming failed\n");
80 mutex_unlock(&dev->bus_adap.lock);
84 static int as102_start_stream(struct as102_dev_t *dev)
86 struct as10x_bus_adapter_t *bus_adap;
90 bus_adap = &dev->bus_adap;
94 if (bus_adap->ops->start_stream != NULL)
95 ret = bus_adap->ops->start_stream(dev);
97 if (ts_auto_disable) {
98 if (mutex_lock_interruptible(&dev->bus_adap.lock))
101 ret = as10x_cmd_start_streaming(bus_adap);
103 mutex_unlock(&dev->bus_adap.lock);
109 static int as10x_pid_filter(struct as102_dev_t *dev,
110 int index, u16 pid, int onoff) {
112 struct as10x_bus_adapter_t *bus_adap = &dev->bus_adap;
117 if (mutex_lock_interruptible(&dev->bus_adap.lock)) {
118 dprintk(debug, "mutex_lock_interruptible(lock) failed !\n");
124 ret = as10x_cmd_del_PID_filter(bus_adap, (uint16_t) pid);
125 dprintk(debug, "DEL_PID_FILTER([%02d] 0x%04x) ret = %d\n",
130 struct as10x_ts_filter filter;
132 filter.type = TS_PID_TYPE_TS;
136 ret = as10x_cmd_add_PID_filter(bus_adap, &filter);
137 dprintk(debug, "ADD_PID_FILTER([%02d -> %02d], 0x%04x) ret = %d\n",
138 index, filter.idx, filter.pid, ret);
143 mutex_unlock(&dev->bus_adap.lock);
149 static int as102_dvb_dmx_start_feed(struct dvb_demux_feed *dvbdmxfeed)
152 struct dvb_demux *demux = dvbdmxfeed->demux;
153 struct as102_dev_t *as102_dev = demux->priv;
157 if (mutex_lock_interruptible(&as102_dev->sem))
161 as10x_pid_filter(as102_dev, dvbdmxfeed->index,
164 if (as102_dev->streaming++ == 0)
165 ret = as102_start_stream(as102_dev);
167 mutex_unlock(&as102_dev->sem);
172 static int as102_dvb_dmx_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
174 struct dvb_demux *demux = dvbdmxfeed->demux;
175 struct as102_dev_t *as102_dev = demux->priv;
179 if (mutex_lock_interruptible(&as102_dev->sem))
182 if (--as102_dev->streaming == 0)
183 as102_stop_stream(as102_dev);
186 as10x_pid_filter(as102_dev, dvbdmxfeed->index,
189 mutex_unlock(&as102_dev->sem);
194 int as102_dvb_register(struct as102_dev_t *as102_dev)
196 struct device *dev = &as102_dev->bus_adap.usb_dev->dev;
199 ret = dvb_register_adapter(&as102_dev->dvb_adap,
200 as102_dev->name, THIS_MODULE,
203 dev_err(dev, "%s: dvb_register_adapter() failed: %d\n",
208 as102_dev->dvb_dmx.priv = as102_dev;
209 as102_dev->dvb_dmx.filternum = pid_filtering ? 16 : 256;
210 as102_dev->dvb_dmx.feednum = 256;
211 as102_dev->dvb_dmx.start_feed = as102_dvb_dmx_start_feed;
212 as102_dev->dvb_dmx.stop_feed = as102_dvb_dmx_stop_feed;
214 as102_dev->dvb_dmx.dmx.capabilities = DMX_TS_FILTERING |
215 DMX_SECTION_FILTERING;
217 as102_dev->dvb_dmxdev.filternum = as102_dev->dvb_dmx.filternum;
218 as102_dev->dvb_dmxdev.demux = &as102_dev->dvb_dmx.dmx;
219 as102_dev->dvb_dmxdev.capabilities = 0;
221 ret = dvb_dmx_init(&as102_dev->dvb_dmx);
223 dev_err(dev, "%s: dvb_dmx_init() failed: %d\n", __func__, ret);
227 ret = dvb_dmxdev_init(&as102_dev->dvb_dmxdev, &as102_dev->dvb_adap);
229 dev_err(dev, "%s: dvb_dmxdev_init() failed: %d\n",
234 ret = as102_dvb_register_fe(as102_dev, &as102_dev->dvb_fe);
236 dev_err(dev, "%s: as102_dvb_register_frontend() failed: %d",
241 /* init bus mutex for token locking */
242 mutex_init(&as102_dev->bus_adap.lock);
244 /* init start / stop stream mutex */
245 mutex_init(&as102_dev->sem);
248 * try to load as102 firmware. If firmware upload failed, we'll be
249 * able to upload it later.
252 try_then_request_module(as102_fw_upload(&as102_dev->bus_adap),
255 pr_info("Registered device %s", as102_dev->name);
259 dvb_dmxdev_release(&as102_dev->dvb_dmxdev);
261 dvb_dmx_release(&as102_dev->dvb_dmx);
263 dvb_unregister_adapter(&as102_dev->dvb_adap);
267 void as102_dvb_unregister(struct as102_dev_t *as102_dev)
269 /* unregister as102 frontend */
270 as102_dvb_unregister_fe(&as102_dev->dvb_fe);
272 /* unregister demux device */
273 dvb_dmxdev_release(&as102_dev->dvb_dmxdev);
274 dvb_dmx_release(&as102_dev->dvb_dmx);
276 /* unregister dvb adapter */
277 dvb_unregister_adapter(&as102_dev->dvb_adap);
279 pr_info("Unregistered device %s", as102_dev->name);
282 static int __init as102_driver_init(void)
286 /* register this driver with the low level subsystem */
287 ret = usb_register(&as102_usb_driver);
289 err("usb_register failed (ret = %d)", ret);
295 * Mandatory function : Adds a special section to the module indicating
296 * where initialisation function is defined
298 module_init(as102_driver_init);
301 * as102_driver_exit - as102 driver exit point
303 * This function is called when device has to be removed.
305 static void __exit as102_driver_exit(void)
307 /* deregister this driver with the low level bus subsystem */
308 usb_deregister(&as102_usb_driver);
312 * required function for unload: Adds a special section to the module
313 * indicating where unload function is defined
315 module_exit(as102_driver_exit);
316 /* modinfo details */
317 MODULE_DESCRIPTION(DRIVER_FULL_NAME);
318 MODULE_LICENSE("GPL");
319 MODULE_AUTHOR("Pierrick Hascoet <pierrick.hascoet@abilis.com>");